Gardai are investigating after the body of 23-year-old Dean Fitzpatrick was found in north Dublin

A man arrested over the death of the brother of a missing teenager has been released without charge.

Dean Fitzpatrick, older brother of Amy Fitzpatrick who went missing in Spain in 2008 aged 15, was found at an apartment complex in north Dublin late on Saturday night. He had suffered fatal stab wounds.

The arrested man, aged in his early 40s, was freed by gardai as a file on the case was prepared for the Director of Public Prosecutions (DPP). Gardai said investigations are continuing.

It is understood the man, who was known to the Fitzpatrick family, voluntarily attended a garda station for questioning on Sunday.

The assault took place at Northern Cross in the Malahide Road area in north of the city, near the Burnell Square apartments.

Mr Fitzpatrick was found at about 11.20pm on Saturday night. He was taken to Beaumont Hospital for treatment but was pronounced dead a short time later.

Gardai were alerted by a witness who also called an ambulance.

The 23-year-old, understood to be a father, had been living in Lusk, north Co Dublin, recently. His family ran a high profile and costly campaign for years in a bid to trace the whereabouts of his sister Amy.

She vanished after leaving a house in the Mijas Costas district of the Costa del Sol in January 2008. She had moved to the Spanish coast with her mother Audrey and Dean in 2005. They had since returned to Ireland.

Audrey Fitzpatrick, originally from Donaghmede, north Dublin, and her stepfather Dave Mahon wrote a book called Amy in a bid to keep news of her disappearance alive.

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